1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * O(1) TX queue with built-in allocator.
 4 *
 5 * Copyright (c) 2017-2018, Silicon Laboratories, Inc.
 6 * Copyright (c) 2010, ST-Ericsson
 7 */
 8#ifndef WFX_QUEUE_H
 9#define WFX_QUEUE_H
10
11#include <linux/skbuff.h>
12#include <linux/atomic.h>
13
14struct wfx_dev;
15struct wfx_vif;
16
17struct wfx_queue {
18	struct sk_buff_head	normal;
19	struct sk_buff_head	cab; // Content After (DTIM) Beacon
20	atomic_t		pending_frames;
21};
22
23void wfx_tx_lock(struct wfx_dev *wdev);
24void wfx_tx_unlock(struct wfx_dev *wdev);
25void wfx_tx_flush(struct wfx_dev *wdev);
26void wfx_tx_lock_flush(struct wfx_dev *wdev);
27
28void wfx_tx_queues_init(struct wfx_vif *wvif);
29void wfx_tx_queues_check_empty(struct wfx_vif *wvif);
30bool wfx_tx_queues_has_cab(struct wfx_vif *wvif);
31void wfx_tx_queues_put(struct wfx_vif *wvif, struct sk_buff *skb);
32struct hif_msg *wfx_tx_queues_get(struct wfx_dev *wdev);
33
34bool wfx_tx_queue_empty(struct wfx_vif *wvif, struct wfx_queue *queue);
35void wfx_tx_queue_drop(struct wfx_vif *wvif, struct wfx_queue *queue,
36		       struct sk_buff_head *dropped);
37
38struct sk_buff *wfx_pending_get(struct wfx_dev *wdev, u32 packet_id);
39void wfx_pending_drop(struct wfx_dev *wdev, struct sk_buff_head *dropped);
40unsigned int wfx_pending_get_pkt_us_delay(struct wfx_dev *wdev,
41					  struct sk_buff *skb);
42void wfx_pending_dump_old_frames(struct wfx_dev *wdev, unsigned int limit_ms);
43
44#endif /* WFX_QUEUE_H */